Abstract: To provide a building frame for constructing a building, the frame being stronger than reinforced concrete, and being able to be relatively easily assembled at a construction site, without skills, and within a short time. Provided are a building frame and the like, the building frame being characterized by comprising: U-shaped parts that are arranged left and right so as to sandwich a center space in a cross-sectional view; and a connection part that connects top portions, on the center side, of the left and right U-shaped parts so as to form a reverse U-shaped part, wherein the longitudinal edges, on the far side from the center, of the U-shaped parts arranged left and right in the cross-sectional view are shorter than the longitudinal edges, on the center side, connected by the connection part.

Abstract: A unit structural member 20 for building utilizes an M-shaped channel 1 which includes a center U-shaped channel section 2 and right and left U-shaped channel sections 6, 5 continuously formed to share right and left side plates 4, 3 of the center U-shaped channel section 2. A channel trench 7 of the center U-shaped channel section 2 and respective channel trenches 9, 8 of the right and left U-shaped channel sections 6, 5 are opened in opposite directions. The unit structural member 20 for building is constituted with a pair of longitudinal beams 15 formed of long pieces of material of the M-shaped channel 1 in parallel at an established distance and a number of lateral beams formed of short pieces of material of the M-shaped channel 1 in parallel laterally between the parallely-arranged longitudinal beams 15 at established distances in the longitudinal direction of the longitudinal beams 15.

Abstract: A unit structural member 20 for building utilizes an M-shaped channel 1 which includes a center U-shaped channel section 2 and right and left U-shaped channel sections 6, 5 continuously formed to share right and left side plates 4, 3 of the center U-shaped channel section 2. A channel trench 7 of the center U-shaped channel section 2 and respective channel trenches 9, 8 of the right and left U-shaped channel sections 6, 5 are opened in opposite directions. The unit structural member 20 for building is constituted with a pair of longitudinal beams 15 formed of long pieces of material of the M-shaped channel 1 in parallel at an established distance and a number of lateral beams formed of short pieces of material of the M-shaped channel 1 in parallel laterally between the parallely-arranged longitudinal beams 15 at established distances in the longitudinal direction of the longitudinal beams 15.

Abstract: A structural member for constructing a building comprising: a pair of structural elements, each of which includes three channels opening alternately towards opposite directions and has a substantially uniform cross section along a longitudinal direction; and a connecting member which connects the pair of structural members.